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在铅锌矿石浮选中 ,用硫酸铜活化后浮选闪锌矿。在这种类型矿石中 ,黄铁矿通常当作脉石矿物处理 ,闪锌矿与黄铁矿和石英的浮选分离选择性不高。但是 ,黄铁矿也可能与金结合。在很多国家 (如南非和澳大利亚 )中 ,浮选这种含金的硫化矿物具有重要意义。在用十二胺作捕收剂的硫化矿阳离子浮选中 ,闪锌矿可以浮起 ,而黄铁矿和石英被抑制。在有石灰存在情况下矿浆很好充气 (特别是用过氧化氢氧化 )时 ,黄铁矿阳离子浮选性能被抑制。在硫化钠存在时 ,黄铁矿经氧化甚至在强碱性介质中也可使其可浮性恢复 (用胺作捕剂时 )。
In the lead-zinc ore flotation, activated by copper sulfate after flotation sphalerite. In this type of ore, pyrite is usually treated as a gangue mineral and the flotation selectivity of sphalerite to pyrite and quartz is not highly selective. However, pyrite may also be combined with gold. In many countries, such as South Africa and Australia, flotation of this gold-bearing sulfide mineral is of great importance. In sulphide cation flotation with dodecylamine as a collector, sphalerite can float while pyrite and quartz are inhibited. Pyrite flotation performance is inhibited when the slurry is well aerated (especially with hydrogen peroxide) in the presence of lime. In the presence of sodium sulfide, pyrite can be flooded (even with amines as a catcher) by oxidation even in strongly alkaline media.